extern int GET();
extern void *MALLOC(int);
extern void FREE(void *);
extern void PRINT(int);

int main() {
  int *a;
  int **b;
  int *c;
  a = (int *)MALLOC(sizeof(int) * 2);
  b = (int **)MALLOC(sizeof(int *));

  *b = a;
  *a = 10;
  *(a + 1) = 20;

  c = *b;
  PRINT(*c);
  PRINT(*(c + 1));
  FREE(a);
  FREE((int *)b);
}
